London: John Churchill, 1840. 8vo. , , 483,  pp., plus 4 pages of publisher's adverstisements. FIRST EDITION. Contemporary green cloth wth gilt letters on spine, lower hinge weakened. Item #4165
First edition. Prout was among the first to divided food components into fats, carbohydrates and proteins. This work led to his discovery that the gastric juice contains free hydrochloric acid.